Road building machine



C H an an nG Ana-11m F DQQQR Oct. 17, 1939. F. w. LOOS ET AL ROADBUILDING MACHINE Original Filed April 10, 1937 4 Sheets-Sheet 1IIIIIIIIIII II II II II '1 III-II III IIIIIIIII III lnventord fflaa' MAfinrneys Oct. 1.7, 1939. F. w. LOOS El AL ROAD BUILDING MACHINEOriginal Filed April 10, 1937 4 Sheets-Sheet 2 In Denier-5 2% &

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Oct. 17, 1939.

F. w. LOOS ET AL ROAD BUILDING MACHINE Original Filed April 10, 193'? 4Sheets-Sheet 3 Inventors Attorneys I II ucaIUH I100 Oct. 17, 1939. F. w.L005 ET AL ROAD BUILDING MACHINE Original Filed April 10, 1937 4Sheets-Sheet 4 Inventors .4 finrneys Patented Oct. 17, 1939 PATENTOFFICE ROAD BUILDING MACHINE Frank W. Loos and Noble A. Knight,Sandusky, Ohio Application April 10, 1937, Serial No. 136,195 RenewedJuly 11, 1939 1 Claim.

This invention appertains to new and useful improvements in means forbuilding roads.

The principal object of the present invention is to provide a machinefor building roads wherein road material is forced under pressure into aroad bed, thus saving considerable time now utilized by workmen while atthe same time constructing a better road surface.

Another important object of the invention is to provide a road buildingmachine wherein the road building material is forced under pressure intoa road bed and simultaneously levelled.

Still another important object of the invention is to provide a roadbuilding machine wherein I material is discharged under pressure and insuch a manner that it is evenly distributed over and into the road bed.

These and various other important objects and advantages of theinvention will become apparent to the reader of the followingspecification.

In the drawings: V

Figure 1 represents a top plan view of the machine.

Figure 2 is a vertical longitudinal sectional view through the machine.

Figure 3 is a vertical sectional view on the line 3-3 of Figure 2.

Figure 4 is a fragmentary vertical sectional view through the hopper.

Figure 5-is a fragmentary transverse sectional view through the upperportion of the machine.

Figure 6 is a horizontal sectional view taken substantially on the line6-6 of Figure 2.

Figure '7 is a fragmentary detailed sectional view of the agitatordrive.

Figure 8 is a fragmentary detailed sectional view of the brush mount. I

Figure 9 is a fragmentary bottom plan view of the brush assembly.

Figure 10 is a fragmentary perspective view of the discharge controlplate.

Figure 11 is a fragmentary sectional view of the machine lifting andlowering means.

Referring to the drawings wherein like numerals designate like parts, itcan be seen in Figure 2, that the forward portion of the machine is tobe located immediately under the rear portion of a truck or the like 5so that material from the truck can be dumped into the hopper generallyreferred to by numeral 6.

This machine consists of the super-frame I gradually tapering toward itsrear end. Vertically disposed through the rear end of the frame l is theshaft 8 of the caster wheel assembly generally referred to by numeral 9.Said shaft 8 is provided with springs l0 above and below the frame 1 toafford shock absorbing means for the caster wheel. The rear portion ofthe frame I is provided with a platform or covering iii.

The hopper 6 consists of a pair of downwardly converging side walls Il-l5 and outside, that is, forwardly and rearwardly of the side walls[4-45 are air passageways defined by vertical walls [6-H downwardlyconverging with respect to the walls I l-l 5. In the passageways l8-l9thus defined are the baffles Zll-ZI respectively. Traversing the upperportions, crossing the hopper 6. and terminating in the upper portion ofthe passageway I8 is the downwardly flaring air conduit 22. A slidevalve plate 23 can close or open the conduit 22 with respect to thepassageway 19 and a vertically slidable plate 24 can close off thepassageway 22 with respect to the hopper 6 and passageway l8 if desired.

These passageways in conjunction with the conduit 22 can be brought intoplay for exerting a downward driving force on material discharged fromthe lower end of the hopper 6. Only one of these air passageways isemployed at a time, the one to be used depending on whether the machineis going in a forward direction or reverse direction. If in the forwarddirection, the passageway I9 is being 'used and the valve plate 24 ismaintained closed. For backward movement of the machine, the valve plate24 will be disposed in open position while the slide plate 23 will beclosed so as to shut off the passageway l9, from air force delivered bythe blower.

In either use of the passageways, the air would force the stone dustinto the roadbed as it leaves the central passageway between thepassageways I8-l9.

A horizontally slidable rod 25 is provided in the lower portion of thehopper 6 and this has fingers 26 thereon so that when the rod isreciprocated these fingers will stir up the material in the hopper andthus agitate the same so that the material will readily discharge fromthe hopper.

As shown in Figure 4, the lower portion of the hopper has a perforatedbottom 21 under which slides the control plate 28, this control platehaving openings 29 therein registrable with the openings in the bottom21. One end of this plate 28 is provided with the shank 30 whereby theplate can be set to regulate the discharge of material.

As is clearly shown in Figures 2 and 3, the rear end of the air conduit22 merges with the fan housing 3| in which the blower 32 is located onthe shaft 33, which shaft is driven by a small electric or gas motor 34mounted upon the platform I3.

Numeral 34 represents the forward axle of the machine which is disposedthrough the vertically disposed frames 36 secured to the front wall l6.Each of these frames 36 has a rack 31 therein with which engages apinion 38 on the corresponding end of the axle 35. Vertically extendingshafts 39 are supported by bearings 46 on the wall 16, each having ahand wheel 4| at its upper end and a worm 42 adjacent its lower endmeshing with a pinion 43 on the said axle 35.

Obviously by rotating these shafts 39 the axle 35 can be rotated so thatit will ride upwardly or downwardly the forward end of the machine.

As is shown in Figure 2, the rear axle or axle housing 44 of the truck 5has the arms 45 secured thereto by U-clamps 46. These arms 45 arebridged by the channeled bar 41 through slots in which extend thepivotal arms 48-48 pivotally secured as at 49 to the front wall 46. Thelower end portions of these arms 48 are perforated and suitable bolts orpins can be disposed through these openings for preventing displacementof the arms 48 from the channeled bar 41.

As is shown in Figure 1, the front wheel 56 rotatable on the axle 35 hasa beveled gear 5| meshing with the beveled gear 52 which is on the stubshaft 53 journaled into the stationary housing 54 (see Figure 7). Alsojournaled into the housing 54 is the short crankshaft 55 on which theclutch sleeve 56 is splined. Secured to the stub shaft 53 is the clutchmember 51 with which the slidable sleeve 56 is engageable. The sleeve 56can be engaged with the clutch member 51 by operation of the pivotalarms 58. The outer end of the short crankshaft 52 is connected as at 59to the agitator rod 25.

The other front wheel 66 has a beveled gear 61 meshing with the bevelgear 62 on a shaft which carries the clutch member 63. A crankshaft 64has a slidable sleeve 65 splined thereon and controlled by the arm 66.This sleeve 65 can be split to engage the clutch member 63 so that thefront wheel 60 is connected up with the crankshaft 64. The crankshaft 64is connected by the rod 61 to the brush back 68 as at 69. V- shapedbrush units 16 are secured to this brush back or bar 68 which isslidably disposed through the guide members I l Extending upwardly fromthe brush back 68 are the shanks l2 slidable in the depending barrels 13which depend from the frame 1 of the machine. Interposed between theupper ends of the shanks l2 and the upper ends of the barrels 13 are thecoiled compressible springs 14 which tend to tensionally urge the brushassemblies against the ground. It can thus be seen that as the wheel 66rotates, the crank 64 will be rotated imparting reciprocatory motion tothe brush back 68.

For permitting lifting of the brush assembly, a pair of liftingassemblies are provided as shown in Figure 1. These lifting assemblieseach consists of a shaft 15 journaled to bearings 76. The shaft isprovided with the hand wheel Tl and has the ratchet wheel 78 with whichthe springpressed dog 19 is engaged. A cable 80 is wound on the shaft 15and extends downwardly through an opening 81 in the platform l3 toconnect to an eye 82 on the brush back 68. Thus the brush assembly canbe lifted from the roadway whenever desired as when bringing the machinefrom one place of operation to another.

While the foregoing specification sets forth the invention in specificterms, it is to be understood that numerous changes in the shape, sizeand materials may be resorted to without departing from the spirit andscope of the invention as claimed hereinafter.

What is claimed as new is:

A road building machine comprising a platform, a hopper depending fromsaid platform and including downwardly converging side walls andsubstantially triangular shaped end walls with the latter projectingforwardly and rearwardly of the side walls, said walls cooperating informing a road material chamber tapering towards its lower end,converging walls coacting with said side and end walls in formingdownwardly converging air passages arranged forwardly and rearwardly ofthe road material chamber, said walls coacting to form a dischargenozzle of elongated formation extending transversely of the platform andarranged in close proximity to the ground and common to the air passagesand the road material chamber, an adjustable control means for thenozzle, an air tube connected with a power driven blower on the platformand connected with the upper portion of the air passages, control meansfor said passages, a pilot ground wheel for one end of the platform,rack type frames carried by one of the walls of the hopper, an axleextending through the frames, wheels journaled on the axle, pinionsjournaled on the axle and meshing with the rack frames, and operatingmeans for rotating the pinions on the rack frames to raise and lower thenozzle of the hopper with respect to the ground.

FRANK W. LOOS. NOBLE A. KNIGHT.

